Atoms of different elements join together in definite proportions to form molecules of compounds. For example, water, ammonia, carbon dioxide. Compounds composed of metals and non-metals contain charged species. The…
(a) Molecular mass of H2CO3 = 2 x 1 + 1 x 12 + 3 x 16 = 2 + 12 + 48 …
(a) 2 (b) 3 (c) 4 (d) 8 (e) 2 (f) 4 (g) 14 (h) 3 (i) 2 (j) 5 (k) 1 (Noble gases do not combine and exist as…
According to Law of multiple proportions (i) H2O, % of O = 16/18 x 100 = 88.89% (ii) H2O2, % of O = 32/34 x 100 = 94.12%
Anions Cations (a) CH3COO- …
Yes, it is a temperature dependent property. The solubility generally, increases with increase in temperature. For example, you can dissolve more sugar in hot water than in cold water.
1 mole of carbon atoms weigh = 12 g Also, 1 mole of carbon atoms = 6.022 x 1023 atoms Thus, 12 g of carbon atoms has 6.022 x 1023…
The composition of CO2 in both the cases would be same, ie., the carbon and oxygen will combine in the same ratio 1 : 2. The law associated is law…
Number of moles of ammonia in 3.00 g = 3.00/17 mol = 0.1764 mol Molecular mass of SO3 = 1 × 32 u + 3 × 16 u = 80…
Gram molar mass of NaOH = 23 + 16 + 1 = 40 g 40 g of NaOH = 1 mol ∴ 1 g of NaOH = 1/40 mol ∴…